First thing that popped into my head:
from Fatal Frame.
There are zombie dogs and humans
in the Resident Evil games and movies, so that would actually be pretty cool to see! All you would have to do is dab some blood on your furry partner. (I'm not a fan of litterally dressing the dog up either).
Then there is this guy
from Silent Hill. But...um..you might need more help getting around than with a seeing eye dog. Otherwise there is the Silent Hill Nurse.
The only anime character I can think of at this moment is Watanuki from XxxHolic. He isn't completely blind, but he does lose eyesight in one eye and is often bandaged.
The rest...Cyclops from X-Men, Blind Mag from Repo! The Genetic Opera (Originally completely blind, got new eyes, then tore them out on her own) and Elle from Kill Bill (Blind in one eye at first, then the good eye gets completely ripped out)
Sorry, can't think of any with actual dogs ^_^; minus the Resident Evil suggestion. The rest, that I know of, would be way too obscure.